Netanyahu’s party picked a young, more hawkish list of candidates in its primary election Monday.

Barring another comeback by the mercurial former general, Barak’s departure marked an end to a distinguished and tumultuous career that spanned half a century. It began on a communal farm, led to military greatness and business success and a mixed record in politics that was highlighted by failed peacemaking efforts during a brief term as prime minister.

Despite polls showing his small, centrist Independence Party gaining momentum after the eight-day Israeli offensive in Gaza that he steered, Barak said he would not run again for office in the Jan. 22 elections.

“I feel I have exhausted my political activity, which had never been a special object of desire for me,” Barak, 70, said in a surprise announcement in Tel Aviv. “There are many ways for me to serve the country and society, not just through politics.”

Barak will remain as defense minister until a new government is sworn in after the elections.